• Preventive medicine · Apr 2023

    Effects of community-based frailty-preventing intervention on all-cause and cause-specific functional disability in older adults living in rural Japan: A propensity score analysis.

    • Yu Nofuji, Satoshi Seino, Takumi Abe, Yuri Yokoyama, Miki Narita, Hiroshi Murayama, Shoji Shinkai, Akihiko Kitamura, and Yoshinori Fujiwara.
    • Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae, Itabashi, Tokyo 173-0015, Japan. Electronic address: nofuji@tmig.or.jp.
    • Prev Med. 2023 Apr 1; 169: 107449107449.

    AbstractPreventing frailty is crucial in aging societies. We examined the effectiveness of a community-based frailty-prevention program for delaying the onset of functional disability among community-dwelling older adults. From 2014 to 2019, 48 community-based frailty prevention classes (FPC, 60 min/session, once a week), comprising resistance exercise and nutritional or psychosocial programs, were established in Yabu City, Japan. We conducted a baseline survey in 2012 and followed up with participants for up to 6.8 years (4.8 years from establishing the first FPC). We analyzed data from 3350 older people. The primary and secondary outcomes were the onset of functional disability and cause-specific functional disability (including dementia and cardiovascular and orthopedic diseases), respectively. In addition to crude Cox proportional hazard regression, inverse probability of treatment weighting (IPTW) and propensity score matching (PSM; 918 nonparticipants and 459 participants) were used to adjust for confounders. Participants were more likely to be female and have a healthy lifestyle than nonparticipants. During the follow-up, 690 individuals developed a functional disability. The hazard ratio of incident functional disability in the participants was significantly lower than that in nonparticipants in the IPTW (hazard ratio 0.53, 95% confidential interval 0.38-0.75) and PSM (0.52, 0.37-0.71) analyses. In age-stratified analysis, significant associations were observed only in the ≥75-year-old subgroup. In a cause-specific analysis, participation significantly and consistently reduced incident functional disability caused by dementia (IPTW 0.47, 0.25-0.86; PSM 0.45, 0.25-0.83). Community-based FPC may be effective for preventing functional disability, especially caused by dementia, in this population.Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.

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